Feature request: allow "to" date to be "today" or "now" etc; stretch: prose date ranges

[ljharb]

This way, instead of having to manually select the dates i want, I could (also using query params) link to "the last month", "the last year", "a specific date to today, whatever today is".

I'd then be able to share the link more broadly since dates that change wouldn't be hardcoded in the URL.